When it comes to innovative tools, Greenlee delivers year after year – with a
comprehensive line of knockout punches that is second to none. Use our helpful
selection guide to choose the right knockout punch for getting through steel,
stainless steel, wood, aluminum, fiberglass, plastic, drywall, ceiling tile,
cement board and more. If you need to knockout, drive, drill, cut or punch, you
know you’ll get through it with Greenlee.